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e57d7d1205
`MemoryStreamArchiveReader` introduced in 0657b551964986fc5504a202eaa5e699d1c72f00 would previously use `MemoryStream.GetBuffer()` to retrieve the underlying byte buffer with stream data. However, this is not generally the method you would want, for two reasons: 1. It can fail if the stream wasn't created in the way that supports it. 2. As per https://learn.microsoft.com/en-us/dotnet/api/system.io.memorystream.getbuffer?view=net-7.0#system-io-memorystream-getbuffer, it will return the _raw_ contents of the buffer, including potentially unused bytes. To fix, use `MemoryStream.ToArray()` instead, which avoids both pitfalls. Notably, `ToArray()` always returns the full contents of the buffer, regardless of `Position`, as documented in: https://learn.microsoft.com/en-us/dotnet/api/system.io.memorystream.toarray?view=net-7.0#system-io-memorystream-toarray